PCE Health and Fitness PCE-MFM 2400 Series, Руководство пользователя

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4 Getting started
4.1 Power supply
For power supply, a 9 V block battery is required. Before replacing these, turn off the meter. The
battery compartment is located at the rear side of the meter. Loosen the cover and insert the battery
as marked. Then close the battery compartment cover.
4.2 Preparation
To start the meter, press until the display reacts. After charging the meter, the measuring screen
will be visible. To turn off the meter, press again. Screw the included Hall sensor into the
connection socket of the meter. Make sure that the plug is in the right position. The measuring tip
with Hall sensor is below the cover.
5 Operation
5.1 Zero point adjustment
A zero point adjustment should be carried out before each measurement. To do so, remove the
cover and raise the measuring tip up in the air or use a zero field chamber. Make sure no magnetic
fields or electromagnetic interference occur in the environment. If the reading is not 0.0 mT/Gs, press
the ZERO key
. The meter will be adjusted and should then display 0.0 mT/Gs.
5.2 Measurement
Before making a measurement, make sure the sensor reaches the environmental temperature. The
cover must be removed to be able to make a measurement. Place the tip (Hall sensor) in the centre
of the magnetic field you wish to measure. The farther the sensor is away from the centre of the
magnetic field, the lower the magnetic flux density will be. As you can see in the picture below, the
transversal sensor must be placed vertically to the flux vector. If you are using the axial sensor, the
flux vectors must be axial to the measuring tip. Allow some time for the reading to stabilise. If the
display shows
“Over Range“, the measured value is outside the measurement range.
Orientation of transversal sensor Orientation of axial sensor
The maximum magnetic flux density is measured when the flux vector (see arrows) is vertical to the
sensor plane. The following chart shows the measuring deviation in line with the angle between the
flux vector and the sensor plane.
Sensor’s angle to the flux vector
Deviation in per cent
10 ° 2.5 %
20 ° 7 %
30 ° 15.2 %
45 ° 30.3 %